GPI 281cc Heads Cam LS3 what do you think it will make
04-19-2019, 11:37 AM
#101
04-19-2019, 11:59 AM
#102
04-19-2019, 12:27 PM
#103
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That does it. Time for a Dmax swap
04-19-2019, 02:00 PM
#105
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04-20-2019, 08:01 PM
#109
Dealt with them on the 1st single disc stall ( same city, 10min away). Called just to ask about a 8in and got a story, & not knowing i've dealt with them before. I need no lecture just do what i'm asking or paying 4. They said a 8in 6000 - 6200 stall, not we can work with a 245mm stall & it cost x amount to do a 8in. If you can't do what i'm asking, i 'll find someone who will no biggie, a lot of racers & NHRA guys say he's (A1) 1 of the best on YB. Cost is about 300 more than morel bushed lifters for ref.
Last edited by Smokey B; 04-20-2019 at 08:15 PM.
06-05-2019, 06:40 PM
#110
Dealt with them on the 1st single disc stall ( same city, 10min away). Called just to ask about a 8in and got a story, & not knowing i've dealt with them before. I need no lecture just do what i'm asking or paying 4. They said a 8in 6000 - 6200 stall, not we can work with a 245mm stall & it cost x amount to do a 8in. If you can't do what i'm asking, i 'll find someone who will no biggie, a lot of racers & NHRA guys say he's (A1) 1 of the best on YB. Cost is about 300 more than morel bushed lifters for ref.
10-15-2019, 04:20 PM
#111
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Was on the dyno a few weeks ago with my C6 and had a titanium retainer fail, dropped #7 intake valve and luckily it went back into the head, bent and stuck. I reached out to GPI and talked with Ryan a bit and ended up doing their 281cc heads (stock ported) milled .042 with .040 cometic gaskets, SS4 fly cut cam 236/254 .646 .637 111+4, johnson short travel lifters, manton series 5 11/32 push rods, smith brothers trunnion kit for stock rockers and BTR .660 dual platinum springs with titanium retainers. I am going to start with the mid runner fast and swap to the L.O.D. intake on the dyno for comparison. Car has electric water pump, crank scraper, tri y headers 2 x 2 1/4 x 3, 3" x pipe, flex fuel, 25% ATI pulley, no belt tensioners, 102tb, rps twin carbon/aluminum flywheel, fly cut pistons .120 and 4.10 gears. My car made 453SAE with the bolt ons and 1.85 rockers and went a best of 10.58@131. I had to swap clutches and last time I ran made 3 passes and went 10.8@128 on 93 with a splash of 110. Just curious what you guys think its capabilities will be.
10-16-2019, 06:56 AM
#112
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Thread Starter
I have 2126s and my push rods varied in length. It is wise to check your lengths and not go off of what worked for someone else. Cam base circles can change depending on lift etc.